Edge-setting machine.



E. N. CHANDLER.

EDGE SETTING MACHINE.

APPLICATION FILED AUG-l4. 1913.

Patented June 22, 1915.

THE NORRIS PETERS 60., PHOTO-LITHQ, WASHINGTON. D. C

EDWIN 1\T. CHANDLER, 0F BRAINTREE, MASSACHUSETTS.

EDGE-SETTING MACHINE.

Specification of Letters Patent.

Patented June 22, 1915.

Application filed August 14, 1913. Serial No. 784,720.

To all whom it may concern:

Be it known that I, EDWIN N. CHANDLER, a citizen of the United States, and resident of Braintree, county of Norfolk, State of Massachusetts, haveinvented an Improvement in Edge-Setting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to a machine for polishing or setting the edges of boots and shoes, and more particularlv to such an improved machine having electrical heating means.

In the manufacture of boots and shoes it is customary to polish or burnish the sole edges by means of a rapidly rotating or reciprocating tool, having its work engaging face to correspond with the size and contour of the edge of the work being operated upon. It is necessary, to secure the best results in this line of work, to heat the burnishing tool, and heretofore it has been customary to em ploy a gas heater having the flame working directly against a part of the edge setting tool. Such a construction, however, has been unsatisfactory as there was constant danger of rendering the tool too hot and burning the work, as well as making it ex tremely difficult to remove one tool and sub stitute another therefor. In the operation of edge setting, it is necessary to apply dif ferent edge setting tools at different portions of the sole edge, one tool being suited for the shank only and another tool for the forepart of the sole edge, and therefore it is an object of my invention to provide an edge setting machine, preferably of the oscillating type, having a plurality of edge setting tools, each capable of immediate adjustment to the same point of operation and which will be capable of being electrically heated to any desired degree of temper.

An important advantage of my improved machine is that a plurality of edge setting tools may be arranged for successive operations upon a shoe, without the operator changing his position, and while he is holding the shoe with its sole edge in position to be operated upon.

Other features of the invention, novel combinations of parts and details of construction, will be hereinafter more fully pointed out and claimed.

In the drawings, wherein a preferred embodiment of the invention is illustrated, Figure 1 is a side view of a machine; Fig. 2 1s a cross sectional view on the line 22 of Fig. l; and Fig. 3 is a vertical view on the line 33 of Fig. 2, but showing the complete tool holder, with a portion of the supporting shaft and carrier for the heater in cross section.

A suitable standard 1 on which to carry the operating parts of my machine has upstanding vertical arms 2 and 8, having in their upper portions journal bearings 4i and 5 respectively for a horizontal shaft 6 which shaft carries fast and loose pulleys 7 and 8 between the bearings 4: and 5. At the forward end of the shaft 6, e. at the left in Fig. 1, is a pin 9 slightly eccentric on the shaft. The standard 1 also is provided with journal bearings for a shaft 10 at 11 and 12, which bearings are preferably at an angle relatively with the bearings a and 5, said shaft 10 serving as a means to actuate the carrier for the edge setting tools, heater. etc., at a convenient angle for the operator. The shaft 10 is provided with a reduced portion at 13 and a collar 14 against which an eX- pansible spring 15 is arranged to bear between the journal bearing 12 and said collar 14 to hold the shaft normally in forward position, a check nut 16 on the extreme right hand threaded end acting as a stop to limit the forward movement of the shaft 10. A locking nut 17 is also provided adjacent the check nut 16.

The journal bearing 11 for the shaft 10 is extended, as shown in Fig. 2, to constitute a hub 18, and on this hub is pivotally mounted a lever 19, having its upper end forked as shown at 20, and in position to receive the eccentric pin 9 on the shaft 6. Rotation of the shaft 6 imparts an oscillating movement to the lever 1.9, as will be readily understood.

Mounted on the extension 18 is a cuplike or flanged member 21, having within the protecting depth of its outer flanges an electrical heater 22, herein shown in conventional. form, as comprising suitable resist ance and insulating enamel or the like. This member 21 is preferably secured rigidly to the lever 19 by set screws 2 and 24:. A carrier 25 is also mounted on the forward end of the bearing 18, and a cap 26 held to the forward end of said bearing by screws 27 and 28 is provided to secure the carrier loosely in rotative position upon said hearing portion 18, as clearly shown in Fig. 2.

A key 29, fixed on the forward end of the shaft 10 is arranged to slide in a slot provided therefor in the member 21, and lever 19, and corresponding slots or notches are arranged in the carrier 25 opposite the position of each one of a plurality of edge setting tools, which may be carried thereby. As herein shown I have provided four edge setting tools 31, 32, 33, and 34., each arranged with a pin for a driving fit in a suitable socket at equi-distant portions about the carrier 25.

Fig. 2 illustrates the pins 36 adapted to hold the edge setting tools upon the carrier 25. Pivoted within the standard 1 at 37 is a bell crank lever 38, having a boss 39 at its upper end adapted to fit between the collar 14 and the forward portion of the shaft 10, and having its other end 40 fast to a rod 41 attached to a foot treadle, (not shown). Depression of the foot treadle serves to move the shaft 10 to the right, viewing Fig. 1, against the tension of the spring 15 and correspondingly to slide the key 29 out of one of the notches 42 in the rear of the carrier 25, leaving said carrier free to be rotated on the forward end of the bearing 18. The operator may then swing the carrier 25 until any one of the desired edge setting tools 31 to 34 is in lowermost position for operating upon the work when the foot treadle is released and the spring 15 will force the key 29 into a corresponding notch 42 in the rear 'of the carrier and hold the carrier rigid within the member 21 and lever 19, so that said carrier and the edge setting tool secured thereto will receive the oscillation imparted to the lever 19 by the eccentric pin 9.

A socket 43 is affixed to the standard 1 at a convenient position to carry the usual finger tool 44 in position for the operator to grasp, in order to facilitate the edge setting operation, the sole edge 45 of a shoe 46 being held up to the edge setting tool by the operator with the aid of such a guide or rest. A set screw 461 through the socket 43 serves to hold the rest 44 in conveniently adjusted position. I prefer to arrange the terminals 47, 48 for the electric heater 22 at positions substantially as shown in Fig. 3, where the oscillation of the lever 19 will have the least vibratory influence upon them, wires 49, 50 being led therefrom to any convenient source of supply. I also prefer to arrange a belt shipper, herein shown as a slide 51, carrying arms 52 and 53, and a handle 54 so that the operator may instantly and quickly shift the power either on or ofi the machine to start or stop the same.

In the operation of my improved edge setting machine, the operator depresses the foot treadle, oscillating the bell crank lever to move the shaft 10 to the right, releasing the key 29 from the carrier 25 and then turning the carrier by hand until the desired edge setting tool is in lowermost position, a. e. in the position of the tool 32 as shown in Fig. 1. The belt shipper is then moved to turn on power, and a rapid oscillation is imparted to the edge setting tool, heat being supplied by the heater 22 at all times and in such degrees as may be desired without the danger of flame, eliminating all chance for injury to the work and the operator. If a shank tool is next desired, the operator may depress the foot treadle and throw out the key 29, while the machine is still running, if desired, swinging the carrier 29 and the desired tool into position when the remaining part of the sole edge is burnished. It is not necessary to change the belt and stop the machine to position any edge setting tool i1 instantly.

It will thus be seen that I have provided an edge setting machine having a plurality of edge setting tools arranged to be positioned and used successively or selectively during the continuous running of the machine; and also amachine utilizing an electrical heater, in closeproximity to the edge burnishing tools, whereby any desired degree of heat can be imparted to said tools by induction from the member 21 to and through the metallic carrier 25. The importance of eliminating the gas flame and all danger incident thereto, as well as the possible danger to the work, 2'. 6. leather, and

sooting, or blackening of the edge tools, etc, will be readily appreciated.

My improved machine having a plurality of tools, may take the place of four of the former type of edge setting machines, or at least two of the socalled twin edge setters, where one machine could only carry two tools. p r

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

In an edge setting machine, a carrier for a plurality of edge setters, means to oscillate said carrier, said oscillating means and carrier havin a keyway and a key slidable therein to loo 1 the carrier to said means, in combination with mechanism to withdraw said key from the carrier to permit the carrier to be moved to carry the edge setters into or out of operative position during the continuous running of the machine. 7 In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWIN N. CHANDLER.

Witnesses:

JAMES R. Honnnn, R. G. HnRsEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. O. 

